Across
- 1. ecological rol of plants
- 3. interaction between living and nonliving things
- 5. element needed by plants ans fixed by bacteria
- 7. gas needed for photosyntesis
Down
- 1. process done by plants in which produce food
- 2. rol of animal in ecosystems
- 4. substance absorbed by roots
- 6. process to transport water in favor of concentration
- 7. organelle used to perform photosynthesis